Deferred Policy Acquisition Costs and Present Value of Future Profits (Details Textual) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2013 USD ($)	Dec. 31, 2013 JPY (¥)
Deferred Policy Acquisition Costs and Present Value of Future Profits [Abstract]
Estimated future net amortization expense of present value of future profits in 2013	$ 5
Estimated future net amortization expense of present value of future profits in 2014	4
Estimated future net amortization expense of present value of future profits in 2015	4
Estimated future net amortization expense of present value of future profits in 2016	3
Estimated future net amortization expense of present value of future profits in 2017		¥ 3

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Expected amortization expense in the fifth year after the balance sheet date of the present value of the future profits of long-duration contracts acquired in a purchase of an insurance enterprise.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 20

-Section S99

-Paragraph 2

-Subparagraph (3)

-URI http://asc.fasb.org/extlink&oid=27015749&loc=d3e569990-122904

+ Details

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- Definition

Expected amortization expense in the fourth year after the balance sheet date of the present value of the future profits of long-duration contracts acquired in a purchase of an insurance enterprise.

+ References

+ Details

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- Definition

Expected amortization expense in the first year after the balance sheet date of the present value of the future profits of long-duration contracts acquired in a purchase of an insurance enterprise.

+ References

+ Details

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- Definition

Expected amortization expense in the third year after the balance sheet date of the present value of the future profits of long-duration contracts acquired in a purchase of an insurance enterprise.

+ References

+ Details

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- Definition

Expected amortization expense in the second year after the balance sheet date of the present value of the future profits of long-duration contracts acquired in a purchase of an insurance enterprise.

+ References

+ Details

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